This is a Premier Route (single Wonderland). To claim an FKT on this route, you must meet a high standard of documentation and verification. See details here: https://fastestknowntime.com/premier-routes.

The Wonderland Trail is an amazing, rugged 95-mile loop around Mt. Rainier, the highest peak in Washington State.   

Desert Trail Completed: Mexico to Canada

The final leg of a hiking trail from the Mexican border to the Canadian border has just been mapped by members of The Desert Trail Association. In the idea stage for at least 40 years, the concept evolved over the succeeding years into a border-to-border trail. Establishment of the final route involved extensive map studies, on-the-ground verification, and coordination with Bureau of Land Management and other public land-use agencies through which the Desert Trail passes.